Heat capacity of Schottky type in low-dimensional spin system

Details Heat capacity of Schottky type in low-dimensional spin system Heat capacity of Schottky type in low-dimensional spin system

2008-03-31

arxiv.org/abs/0803.4495v1

J. Phys.: Condens. Matter, 20, 215213 (2008)

Physics

Condensed Matter

Strongly Correlated Electrons

7 pages, 5 figures

Scientific paper

10.1088/0953-8984/20/21/215213

The heat capacity of low-dimensional spin systems is studied using theoretical and numerical techniques. Keeping only two energy states, the system is mapped onto the two -level-system (TLS) model. Using the low temperature Lanczos method, it is confirmed that the behavior of $T_{M}$ and the energy gap as functions of the control parameter is the same in the two models studied; a conclusion that can probably be extrapolated to the general case of any system that possesses an energy gap.

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